def _xu_element(self, context, element, preserveSpace):
name = element.getAttributeNS(EMPTY_NAMESPACE, 'name')
if not name:
raise XUpdateException(XUpdateException.NO_NAME)
_name = self.parseAVT(name)
namespace = element.getAttributeNS(EMPTY_NAMESPACE, 'namespace')
_namespace = self.parseAVT(namespace)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(element)
name = _name.evaluate(context)
namespace = _namespace and _namespace.evaluate(context)
(prefix, local) = SplitQName(name)
if not namespace:
if prefix:
namespace = context.processorNss[prefix]
else:
namespace = EMPTY_NAMESPACE
self.writers[-1].startElement(name, namespace)
for child in element.childNodes:
self.visit(context, child, preserveSpace)
self.writers[-1].endElement(name, namespace)
context.processorNss = oldNss
return
def _xu_attribute(self, context, node, preserveSpace):
name = node.getAttributeNS(EMPTY_NAMESPACE, 'name')
if not name:
raise XUpdateException(XUpdateException.NO_NAME)
_name = self.parseAVT(name)
namespace = node.getAttributeNS(EMPTY_NAMESPACE, 'namespace')
_namespace = self.parseAVT(namespace)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
name = _name.evaluate(context)
namespace = _namespace and _namespace.evaluate(context)
(prefix, local) = SplitQName(name)
if not namespace:
if prefix:
namespace = context.processorNss[prefix]
else:
namespace = EMPTY_NAMESPACE
self.pushStringResult()
try:
for child in node.childNodes:
self.visit(context, child, preserveSpace)
finally:
result = self.popResult()
self.writers[-1].attribute(name, result, namespace)
context.processorNss = oldNss
return
def _xu_insert(self, context, element, preserveSpace):
select = element.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(element)
nodeset = self.evaluateExpression(context, select)
if not nodeset:
raise XUpdateException(XUpdateException.INVALID_SELECT,
expr=select)
for refnode in nodeset:
self.pushDomResult(refnode.ownerDocument)
try:
for child in element.childNodes:
self.visit(context, child, preserveSpace)
finally:
result = self.popResult()
if element.localName == 'insert-before':
refnode.parentNode.insertBefore(result, refnode)
elif element.localName == 'insert-after':
# if arg 2 is None, insertBefore behaves like appendChild
refnode.parentNode.insertBefore(result, refnode.nextSibling)
context.processorNss = oldNss
return
def _xu_append(self, context, element, preserveSpace):
select = element.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
child = element.getAttributeNS(EMPTY_NAMESPACE, u'child') or u'last()'
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(element)
nodeset = self.evaluateExpression(context, select)
if not isinstance(nodeset, Types.NodesetType) or not nodeset:
# Error if not a node-set or empty node-set
raise XUpdateException(XUpdateException.INVALID_SELECT,
expr=select)
for refnode in nodeset:
self.pushDomResult(refnode.ownerDocument)
# A wrapper element is used in case attributes are being added
wrapper_localName = 'wrapper'
wrapper_namespace = EMPTY_NAMESPACE
try:
self.writers[-1].startElement(wrapper_localName,
wrapper_namespace)
for node in element.childNodes:
self.visit(context, node, preserveSpace)
finally:
self.writers[-1].endElement(wrapper_localName,
wrapper_namespace)
result = self.popResult()
size = len(refnode.childNodes)
con = Context.Context(refnode, 1, size,
processorNss={'xupdate': XUPDATE_NS})
# Python lists is 0-indexed counting, node-sets 1-indexed
position = self.evaluateExpression(con, child)
position = int(Conversions.NumberValue(position))
wrapper = result.childNodes[0]
if wrapper.attributes and hasattr(refnode, 'setAttributeNodeNS'):
for attr in wrapper.attributes.values():
refnode.setAttributeNodeNS(attr)
# we operate on a shallow copy of the child nodes here to avoid
# modifying the membership of the sequence we're interating over.
for node in tuple(wrapper.childNodes):
if position >= size:
refnode.appendChild(node)
else:
refnode.insertBefore(node, refnode.childNodes[position])
context.processorNss = oldNss
return
def _xu_if(self, context, element, preserveSpace):
test = element.getAttributeNS(EMPTY_NAMESPACE, u'test')
if not test:
raise XUpdateException(XUpdateException.NO_TEST)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(element)
result = self.evaluateExpression(context, test)
if Conversions.BooleanValue(result):
for node in element.childNodes:
self.visit(context, node, preserveSpace)
context.processorNss = oldNss
return
def _xu_processing_instruction(self, context, element, preserveSpace):
name = element.getAttributeNS(EMPTY_NAMESPACE, 'name')
if not name:
raise XUpdateException(XUpdateException.NO_NAME)
_name = self.parseAVT(name)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
name = _name.evaluate(context)
self.pushStringResult()
try:
for node in element.childNodes:
self.visit(context, node, preserveSpace)
finally:
result = self.popResult()
self.writers[-1].processingInstruction(name, result)
context.processorNss = oldNss
return
def _xu_remove(self, context, element, preserveSpace):
select = element.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(element)
nodeset = self.evaluateExpression(context, select)
if nodeset:
refnode = nodeset[0]
if refnode.nodeType == Node.ATTRIBUTE_NODE:
parent = refnode.ownerElement
parent.removeAttributeNode(refnode)
else:
parent = refnode.parentNode
if parent is None:
parent = refnode.ownerDocument
parent.removeChild(nodeset[0])
context.processorNss = oldNss
return
def _xu_rename(self, context, element, preserveSpace):
select = element.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(element)
nodeset = self.evaluateExpression(context, select)
if not nodeset:
raise XUpdateException(XUpdateException.INVALID_SELECT,
expr=select)
new_name = XmlStrStrip(element.firstChild.data)
(prefix, local) = SplitQName(new_name)
if prefix:
namespace = context.processorNss[prefix]
else:
namespace = EMPTY_NAMESPACE
for refnode in nodeset:
if refnode.nodeType == Node.ATTRIBUTE_NODE:
parent = refnode.ownerElement
parent.removeAttributeNode(refnode)
parent.setAttributeNS(namespace, new_name, refnode.value)
else:
parent = refnode.parentNode
if parent is None:
parent = refnode.ownerDocument
new_elem = refnode.ownerDocument.createElementNS(namespace, new_name)
parent.replaceChild(new_elem, refnode)
# Copy any existing attributes to the newly created element
if refnode.attributes:
for attr in refnode.attributes.values():
new_elem.setAttributeNodeNS(attr)
# Now copy any children as well
while refnode.firstChild:
new_elem.appendChild(refnode.firstChild)
context.processorNss = oldNss
return
def _xu_value_of(self, context, element, preserveSpace):
select = element.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(element)
result = self.evaluateExpression(context, select)
if isinstance(result, Types.NodesetType):
for node in result:
# should be OK to pass self as processor;
# CopyNode only needs to access its .writers[-1]
CopyNode(self, node)
else:
# a string, number or boolean
if not isinstance(result, Types.StringType):
result = Conversions.StringValue(result)
self.writers[-1].text(result)
context.processorNss = oldNss
return
def _xu_variable(self, context, element, preserveSpace):
name = element.getAttributeNS(EMPTY_NAMESPACE, 'name')
if not name:
raise XUpdateException(XUpdateException.NO_NAME)
select = element.getAttributeNS(EMPTY_NAMESPACE, u'select')
if select:
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(element)
result = self.evaluateExpression(context, select)
context.processorNss = oldNss
else:
result = Conversions.StringValue(element)
(prefix, local) = SplitQName(name)
if prefix:
namespace = context.processorNss[prefix]
else:
namespace = EMPTY_NAMESPACE
context.varBindings[(namespace, local)] = result
return
def _xu_update(self, context, element, preserveSpace):
select = element.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(element)
nodeset = self.evaluateExpression(context, select)
if not nodeset:
raise XUpdateException(XUpdateException.INVALID_SELECT,
expr=select)
refnode = nodeset[0]
if refnode.nodeType == Node.ATTRIBUTE_NODE:
self.pushStringResult()
try:
for child in element.childNodes:
self.visit(context, child, preserveSpace)
finally:
result = self.popResult()
refnode.value = result
else:
self.pushDomResult(refnode.ownerDocument)
try:
for child in element.childNodes:
self.visit(context, child, preserveSpace)
finally:
result = self.popResult()
while refnode.firstChild:
refnode.removeChild(refnode.firstChild)
refnode.appendChild(result)
context.processorNss = oldNss
return
def visit(self, context, node, preserveSpace):
#FIXME: We should improve this function from this ugly-ass
#switch thingie to dynamic dispatch
if node.nodeType == Node.ELEMENT_NODE:
xml_space = node.getAttributeNS(XML_NAMESPACE, 'space')
if xml_space == 'preserve':
preserveSpace = 1
elif xml_space == 'default':
preserveSpace = 0
# else, no change
if node.namespaceURI != XUPDATE_NS:
self.writers[-1].startElement(node.nodeName, node.namespaceURI)
# Process the attributes
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
for attr in node.attributes.values():
value = self.parseAVT(attr.value)
value = value.evaluate(context)
self.writers[-1].attribute(attr.nodeName, value,
attr.namespaceURI)
context.processorNss = oldNss
# Now the children
for child in node.childNodes:
context = self.visit(context, child, preserveSpace)
self.writers[-1].endElement(node.nodeName)
return context
# XUpdate elements
try:
restoreGraphContext = False
graphURI = node.getAttributeNS(EMPTY_NAMESPACE, u'to-graph')
if graphURI:
graphURI = self.parseAVT(graphURI)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
graphURI = graphURI.evaluate(context)
context.processorNss = oldNss
context.node.ownerDocument.pushContext(graphURI)
restoreGraphContext = True
if node.localName == 'modifications':
for n in node.childNodes:
self.visit(context, n, preserveSpace)
elif node.localName == 'remove':
select = node.getAttributeNS(EMPTY_NAMESPACE, u'select')
#import sys
#print >>sys.stderr, 'removing', select
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
_select = self.parseExpression(select)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
nodeset = _select.evaluate(context)
if nodeset:
#change from 4Suite -- why did it only delete the first node in the nodeset?
#that's not in the spec or very intuitive
#refnode = nodeset[0]
for refnode in nodeset:
if refnode.nodeType == Node.ATTRIBUTE_NODE:
parent = refnode.ownerElement
parent.removeAttributeNode(refnode)
else:
parent = refnode.parentNode
if parent is None:
parent = refnode.ownerDocument
parent.removeChild(refnode)
context.processorNss = oldNss
elif node.localName in ['insert-after', 'insert-before']:
select = node.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
_select = self.parseExpression(select)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
nodeset = _select.evaluate(context)
if not nodeset:
raise XUpdateException(XUpdateException.INVALID_SELECT)
refnode = nodeset[0]
self.pushDomResult(refnode.ownerDocument)
try:
for child in node.childNodes:
context = self.visit(context, child, preserveSpace)
finally:
result = self.popResult()
if node.localName == 'insert-before':
refnode.parentNode.insertBefore(result, refnode)
elif node.localName == 'insert-after':
# if arg 2 is None, insertBefore behaves like appendChild
refnode.parentNode.insertBefore(
result, refnode.nextSibling)
context.processorNss = oldNss
elif node.localName == 'element':
name = node.getAttributeNS(EMPTY_NAMESPACE, 'name')
if not name:
raise XUpdateException(XUpdateException.NO_NAME)
_name = self.parseAVT(name)
namespace = node.getAttributeNS(EMPTY_NAMESPACE,
'namespace')
_namespace = self.parseAVT(namespace)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
name = _name.evaluate(context)
namespace = _namespace and _namespace.evaluate(context)
(prefix, local) = SplitQName(name)
if not namespace:
if prefix:
namespace = context.processorNss[prefix]
else:
namespace = EMPTY_NAMESPACE
self.writers[-1].startElement(name, namespace)
for child in node.childNodes:
context = self.visit(context, child, preserveSpace)
self.writers[-1].endElement(name)
context.processorNss = oldNss
elif node.localName == 'attribute':
name = node.getAttributeNS(EMPTY_NAMESPACE, 'name')
if not name:
raise XUpdateException(XUpdateException.NO_NAME)
_name = self.parseAVT(name)
namespace = node.getAttributeNS(EMPTY_NAMESPACE,
'namespace')
_namespace = self.parseAVT(namespace)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
name = _name.evaluate(context)
namespace = _namespace and _namespace.evaluate(context)
(prefix, local) = SplitQName(name)
if not namespace:
if prefix:
namespace = context.processorNss[prefix]
else:
namespace = EMPTY_NAMESPACE
self.pushStringResult()
try:
for child in node.childNodes:
context = self.visit(context, child, preserveSpace)
finally:
result = self.popResult()
self.writers[-1].attribute(name, result, namespace)
context.processorNss = oldNss
elif node.localName == 'append':
select = node.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
_select = self.parseExpression(select)
child = node.getAttributeNS(EMPTY_NAMESPACE,
u'child') or u'last()'
_child = self.parseExpression(child)
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
nodeset = _select.evaluate(context)
if not nodeset:
raise XUpdateException(XUpdateException.INVALID_SELECT,
select)
refnode = nodeset[0]
self.pushDomResult(refnode.ownerDocument)
try:
for child in node.childNodes:
context = self.visit(context, child, preserveSpace)
finally:
result = self.popResult()
size = len(refnode.childNodes)
con = Context.Context(refnode,
1,
size,
processorNss={'xupdate': XUPDATE_NS})
# Python lists is 0-indexed counting, node-sets 1-indexed
position = int(
Conversions.NumberValue(_child.evaluate(con)))
if position >= size:
refnode.appendChild(result)
else:
refnode.insertBefore(result,
refnode.childNodes[position])
context.processorNss = oldNss
elif node.localName == 'replace':
select = node.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
try:
_select = self.parseExpression(select)
except SyntaxError, e:
raise SyntaxError("Select Expression %s: %s" %
(select, str(e)))
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
nodeset = _select.evaluate(context)
if not nodeset:
raise XUpdateException(
XUpdateException.INVALID_SELECT,
node.getAttributeNS(EMPTY_NAMESPACE, u'select'))
refnode = nodeset[0]
self.pushDomResult(refnode.ownerDocument)
try:
for child in node.childNodes:
context = self.visit(context, child, preserveSpace)
finally:
result = self.popResult()
if refnode.nodeType == Node.ATTRIBUTE_NODE:
owner = refnode.parentNode
owner.removeAttributeNode(refnode)
owner.setAttributeNodeNS(result)
else:
refnode.parentNode.replaceChild(result, refnode)
context.processorNss = oldNss
elif node.localName == 'update':
select = node.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
try:
_select = self.parseExpression(select)
except SyntaxError, e:
raise SyntaxError("Select Expression %s: %s" %
(select, str(e)))
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
nodeset = _select.evaluate(context)
if not nodeset:
raise XUpdateException(
XUpdateException.INVALID_SELECT,
node.getAttributeNS(EMPTY_NAMESPACE, u'select'))
refnode = nodeset[0]
if refnode.nodeType == Node.ATTRIBUTE_NODE:
self.pushStringResult()
try:
for child in node.childNodes:
context = self.visit(context, child,
preserveSpace)
finally:
result = self.popResult()
refnode.nodeValue = refnode.value = result
else:
self.pushDomResult(refnode.ownerDocument)
try:
for child in node.childNodes:
context = self.visit(context, child,
preserveSpace)
finally:
result = self.popResult()
while refnode.firstChild:
#print 'remove', id(refnode), id(refnode.firstChild), len(refnode.childNodes)
refnode.removeChild(refnode.firstChild)
refnode.appendChild(result)
context.processorNss = oldNss
refnode.appendChild(result)
context.processorNss = oldNss
elif node.localName == 'rename':
select = node.getAttributeNS(EMPTY_NAMESPACE, u'select')
if not select:
raise XUpdateException(XUpdateException.NO_SELECT)
try:
_select = self.parseExpression(select)
except SyntaxError, e:
raise SyntaxError("Select Expression %s: %s" %
(select, str(e)))
oldNss = context.processorNss
context.processorNss = Domlette.GetAllNs(node)
nodeset = _select.evaluate(context)
if not nodeset:
raise XUpdateException(
XUpdateException.INVALID_SELECT,
node.getAttributeNS(EMPTY_NAMESPACE, u'select'))
Domlette.XmlStrStrip(node.firstChild.data)
new_name = node.firstChild.data.strip()
(prefix, local) = SplitQName(new_name)
if prefix:
namespace = context.processorNss[prefix]
else:
namespace = EMPTY_NAMESPACE
